Disclosed is a die press, comprising a base, opposing first and second supports extending from the base, at least one cam member that is supported by the opposing supports, means for rotating the cam member, at least one bearing located on the cam member, a platen positioned generally between the at least one bearing and the base, and a cover being unitary with the platen, the cover being slidably engaged with the opposing supports to guide the platen during operation of the die press.
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1. A die press, comprising:
a base; opposing first and second supports extending from the base; at least one cam member that is supported by the opposing supports; means for rotating the cam member; at least one bearing located on the cam member; a platen positioned generally between the at least one bearing and the base; a center rail extending upward from the base and having a chamfered corner; and a cover being unitary with the platen, the cover being slidably engaged with the opposing supports to guide the platen during operation of the die press.
24. A die press, comprising:
a base; opposing first and second supports extending from the base; a cam member that is supported by the opposing supports; means for rotating the cam member; a plurality of bearings located on the cam member; an upper platen positioned generally between the bearings and the base; and a center rail extending upward from the base and having a chamfered corner; a cover being attached to the platen to define a unitary structure, the cover being slidably engaged with the opposing supports to guide the upper platen during operation of the die press and to resist torsional forces.
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This application relates to Provisional Application Serial No. 60/303,031, filed on Jul. 3, 2001 and entitled Die Press with Integral Cover and Guides and Improved Die Feed System.
The present invention relates to sheet cutting presses and, more particularly, a sheet cutting press with improvements directed to a guide for the platen and an improved die feed system.
Dies and sheet cutting presses are used to cut various patterns out of sheet materials. The presses are designed to apply uniform pressure to a platen and die to cut through a sheet or a plurality of sheets simultaneously. The forces that are generated during the cutting action oftentimes force the platen to become nonparallel in relation to the die, which may result in an uneven or incomplete cut through the sheet material. Therefore, in the past, improvements to die presses have been directed toward maintaining the platen parallel in relation to the die throughout the cutting stroke.
Disclosed is a die press, comprising a base, opposing first and second supports extending from the base, at least one cam member that is supported by the opposing supports, means for rotating the cam member, at least one bearing located on the cam member, a platen positioned generally between the at least one bearing and the base, and a cover being unitary with the platen, the cover being slidably engaged with the opposing supports to guide the platen during operation of the die press.
In another aspect of the invention, disclosed is a die press, comprising a base, an upper platen opposite of the base, means for moving the upper platen toward the base by rotating at least one cam member, and means for guiding the upper platen.
In another aspect of the invention, disclosed is a die press, comprising a base, opposing first and second supports extending from the base, a cam member that is supported by the opposing supports, means for rotating the cam member, a plurality of bearings located on the cam member, an upper platen positioned generally between the bearings and the base, and a cover being attached to the platen to define a unitary structure, the cover being slidably engaged with the opposing supports to guide the upper platen during operation of the die press and to resist torsional forces.
In yet another aspect of the invention, disclosed is a die press, comprising a base, at least two opposing supports extending from the base, at least one cam member that is supported by the opposing supports, a handle extending from the cam member, an upper platen positioned between the bearings and the base, the base further including at least two rails extending from the base, the rails being adapted to support a die.
Further, disclosed is a cover used with the die press which has stiffening ribs to resist torsional forces applied to the cover during operation of the press. Also disclosed is a feed system to feed a die or shuttle into the platen working area by utilizing rails that extend from the base. Each rail further includes a cutout, and the cutouts oppose each other to define a track so that a die or shuttle may be moved along the track into and out of a working area between the platen and the base.
The invention will now be described in greater detail with reference to the preferred embodiments illustrated in the accompanying drawings, in which like elements bear like reference numerals, and wherein:
Incorporated herein by reference, in its entirety, is U.S. Pat. No. 5,255,587. A die press 10 according to the present invention is shown in FIG. 1. The die press 10 includes a base 12 with a lower platen 14 attached to the base 12. The die press further includes opposing supports. A first support 16 and an opposing second support 18 both extend upward from the lower platen 14. In the alternative, the supports may extend from the base 12 or the rails on the base. As will be further described below, the supports 16 and 18 support a cam roller and two bearings. The cam roller and bearings are covered by integral cover 20. Attached to integral cover 20 by a plurality of fasteners is an upper platen 22. The integral cover 20 includes a cutout 24 for handle 26. The handle 26 extends from the cam roller, and attached to the distal end of the handle 26 is a grip 28.
As shown in
As shown in
The upper platen 22 is positioned between the bearings and the lower platen 14. The integral cover 20 is fastened to the upper platen 22, so as to encompass the first and second bearings 48 and 50. As will be further explained below, the integral cover 20 cooperates with the cam member 46 so that when the cam member 46 is rotated by the handle 26 being lowered, the integral cover 20 is lowered and likewise the upper platen 22 is lowered against a die 64 positioned between the upper and lower platens. When additional pressure is applied to the handle 26, the cam member 46 is rotated even further and uniform pressure is applied to the upper platen 22 via the bearings 48 and 50. In an alternative embodiment, additional bearings are located on the cam member so that additional or more uniform pressure may be applied to the upper platform.
As shown in
During operation, a shuttle is used to protect the user by allowing a means to keep the user's fingers out of the working area of the press. The shuttle is used to slide the die 64, the sheet material 65 to be cut into the work area between the upper and lower platens. The shuttle comprises a cutting pad 72 made of a flexible but resilient plastic material. In the alternative, the shuttle may be the cutting pad, the die, and the sheet material. The cutting pad 72 is adapted to slide along the first and second rails 30 and 32 by fitting into the first and second rail cutouts 34 and 36. The operator positions the cutting pad away from the platens and adjacent to pad 44, then places the sheet material 65 to be cut on the cutting pad 72, and then places the selected cutting die with the rubber material 70 in contact with the sheet material 65 on the cutting pad 72. The operator then slides the cutting pad, sheet material, and die into the work area between the platens by sliding the cutting pad 72 along the first and second rail cutouts 34 and 36. The operator then lowers the handle 26 by applying force to the grip 28 and, as will be further explained below, at the end of the cutting stroke, force is applied to the upper platen 22 and to the die through the handle 26 and the bearings 48 and 50. The rubber 70 yields to expose the steel rule blade 68 and likewise, as force is further applied, the steel rule blade 68 cuts through the sheet material 65 and either cuts against or slightly into the cutting pad 72. The handle 26 is then raised, and the operator slides the cutting pad, sheet material, and die out of the work area to gain access to the resulting shape that has been cut from the sheet material. The operator may utilize one sheet or a plurality of sheets of paper or other materials, such as laminates, for the material to be cut.
The die 64 could further be dimensioned so as to fit within the first and second rail cutouts 34 and 36. In this embodiment, the die would be slid along the rails into the work area. Also, the die 64 could further be dimensioned so as to rest upon the center rail 38 and one of the rail cutouts 34 or 36. Or, another alternative may be that the cutting pad 72 and the die 64 may be rotated upside down 180°C and placed into the work area so that the upper platen 22 applies force directly to the cutting pad 72 instead of directly to the die 64. In this alternative, a full size die would rest in the first and second rail cutouts 34 and 36. If a smaller die is used in this fashion, the die would rest on the center rail and one of the rail cutouts.
As described above and as shown in
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Although this invention has been shown and described with respect to detailed embodiments, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of the claimed invention.
Corcoran, Kevin L., Hughes, Jr., David L.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jul 03 2002 | Ellison Educational Equipment, Inc. | (assignment on the face of the patent) | / | |||
Sep 09 2002 | CORCORAN, KEVIN L | ELLISON EDUCATIONAL EQUIPMENT, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 013368 | /0814 | |
Sep 09 2002 | HUGHES, JR DAVID L | ELLISON EDUCATIONAL EQUIPMENT, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 013368 | /0814 |
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